Abstract | OBJECTIVE: METHODS:
Peptide binding to the MHC molecules was determined by in vitro binding assays, and binding was correlated with the frequencies of the 5 MHC molecules in patients with treatment-resistant Lyme arthritis. RESULTS: The HLA-DRB1*0401 molecule bound both OspA(163-175) and hLFA-1alpha(L330-342) well. Although the magnitude of the binding was less, the DRB1*0404 molecule also showed binding of both peptides. The DRB1*0101 molecule bound OspA(163-175) well, but hLFA-1alpha(L330-342) only weakly; the DRB1*0801 or *1101 molecule bound both peptides weakly, if at all. The magnitude of OspA(163-175) binding correlated well with the frequencies of the DRB1 alleles in patients with treatment-resistant arthritis, but the binding of hLFA-1alpha(L330-342) showed only an association with the DRB*04 alleles. CONCLUSION: These correlations support the hypothesis that OspA(163-175) is the critical epitope in triggering antibiotic treatment-resistant Lyme arthritis. However, the inability of the DRB*0101 molecule to bind hLFA-1alpha(L330-342) suggests that this peptide may not be a relevant autoantigen, at least in DRB1*0101-positive patients.
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Authors | Allen C Steere, Ben Falk, Elise E Drouin, Lee Ann Baxter-Lowe, Juergen Hammer, Gerald T Nepom |
Journal | Arthritis and rheumatism
(Arthritis Rheum)
Vol. 48
Issue 2
Pg. 534-40
(Feb 2003)
ISSN: 0004-3591 [Print] United States |
PMID | 12571864
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Research Support, U.S. Gov't, P.H.S.)
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Chemical References |
- Antigens, Surface
- Bacterial Outer Membrane Proteins
- Bacterial Vaccines
- HLA-DR Antigens
- Lipoproteins
- Lymphocyte Function-Associated Antigen-1
- OspA protein
- Peptide Fragments
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Topics |
- Antigens, Surface
(metabolism)
- Bacterial Outer Membrane Proteins
(metabolism)
- Bacterial Vaccines
- Binding, Competitive
- Drug Resistance, Bacterial
- Gene Frequency
- HLA-DR Antigens
(genetics, metabolism)
- Humans
- In Vitro Techniques
- Lipoproteins
- Lyme Disease
(drug therapy, genetics, immunology)
- Lymphocyte Function-Associated Antigen-1
(metabolism)
- Peptide Fragments
(metabolism)
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